<template>
  <el-aside width="220px" class="image-aside" v-loading="loading">
    <div class="top">
      <AsideList :active="activeId == item.id" v-for="(item, index) in list" :key="index" @edit="handleEdit(item)"
        @delete="handleDelete(item.id)" @click="handleChangeActiveId(item.id)">{{
            item.name
        }}</AsideList>
    </div>
    <div class="bottom">
      <el-pagination background layout="prev, next" :total="total" :current-page="currentPage" :page-size="limit"
        @current-change="getData" />
    </div>
  </el-aside>

  <FormDrawer :title="drawerTile" ref="formDrawerRef" @submit="handleSubmit">
    <el-form :model="form" ref="formRef" :rules="rules" label-width="80px" :inline="false">
      <el-form-item label="分类名称" prop="name">
        <el-input v-model="form.name"></el-input>
      </el-form-item>
      <el-form-item label="排序" prop="order">
        <el-input-number v-model="form.order" :min="0" :max="1000" />
      </el-form-item>
    </el-form>
  </FormDrawer>

</template>

<script setup>
import { ref, reactive, computed } from 'vue'
import FormDrawer from './FormDrawer.vue'
import { getImageClassList, createImageClass, updateImageClass, deleteImageClass } from '~/api/image_class.js'
import AsideList from './AsideList.vue';
import { toast } from '~/composables/util.js'

// 加载动画
const loading = ref(false)
// 定义数组接收数据
const list = ref([])

// 分页
const currentPage = ref(1)
const total = ref(0)
const limit = ref(10)

// 获取数据
function getData(p = null) {
  if (p === 'number') {
    currentPage.value = p
  }

  loading.value = true
  getImageClassList(currentPage.value).then(res => {
    total.value = res.totalCount
    list.value = res.list
    const item = list.value[0]
    // 如果item存在就让激活状态=获取的第一个数据的item.id
    if (item) {
      handleChangeActiveId(item.id)
    }
  }).finally(() => {
    loading.value = false
  })
}
getData()

const editId = ref(0)
const drawerTile = computed(() => editId.value ? '修改' : '新增')

const formDrawerRef = ref(null)

const form = reactive({
  name: '',
  order: 50
})

// 表单校验
const rules = {
  name: [{
    required: true,
    message: '图库分类名称不能为空',
    trigger: 'blur'
  }]
}

const formRef = ref(null)
// 提交表单
const handleSubmit = () => {
  formRef.value.validate((valid) => {
    // 判断验证是否通过
    if (!valid) return

    formDrawerRef.value.showLoading()
    const fun = editId.value ? updateImageClass(editId.value, form) : createImageClass(form)
    fun.then(res => {
      toast(drawerTile.value + '新增成功')
      // 重新获取数据
      getData(editId.value ? currentPage.value : 1)
      // 关闭弹框
      formDrawerRef.value.close()
    }).finally(() => {
      formDrawerRef.value.hideLoading()
    })
  })
}

// 新增
const handleCreate = () => {
  editId.value = 0
  form.name = ''
  form.order = 50
  formDrawerRef.value.open()
}

// 编辑
const handleEdit = (row) => {
  editId.value = row.id
  // 回写数据
  form.name = row.name
  form.order = row.order
  // 打开抽屉组件
  formDrawerRef.value.open()
}

// 删除
const handleDelete = (id) => {
  loading.value = true
  deleteImageClass(id)
    .then(res => {
      toast("删除成功")
      // 重新获取数据
      getData()
    })
    .finally(() => {
      loading.value = false
    })
}

// 选中图库分类id
const activeId = ref(0)
const emit = defineEmits(["change"])
// 切换分类的方法
function handleChangeActiveId(id) {
  activeId.value = id
  emit("change", id) // 通知父组件
}

defineExpose({
  handleCreate
})

</script>

<style scoped>
.image-aside {
  border-right: 1px solid #eee;
  position: relative;
}

.image-aside .top {
  position: absolute;
  top: 0;
  right: 0;
  left: 0;
  bottom: 50px;
  overflow-y: auto;
}

.image-aside .bottom {
  position: absolute;
  bottom: 0;
  height: 50px;
  left: 0;
  right: 0;
  @apply flex items-center justify-center;
}
</style>